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Oracle Database 19cから、SEやEEオプション無しでもPDBが3つまでサポートされた件

Oracle Database 12cがリリースされたとき

「マルチテナントが一番の目玉機能。しかし、複数のPDBを利用するにはEE+有償オプションが必要。キリッ!」

と発表されて、イスから転げ落ちそうになったのは私だけではないはずだ。

それが「19cからSEやEEオプション無しでも3つまでOK」になったらしい。

ニュースソースはMigration & Upgradeのスペシャリストで中の人"Mike Dietrich"のブログ。

3 PDBs included with Oracle 19c and desupport of non-CDBs with 20c
https://mikedietrichde.com/2019/09/17/3-pdbs-included-with-oracle-19c-and-desupport-of-non-cdbs-with-20c/

MikeはOracle社員なのにblogs.oracle.comではなく、mikedietrichde.comという独自サイトを運営。このサイトは記事だけでなく、PPT(PDF)やハンズオン資料などのアップグレードに関する情報満載。Mikeとは何度か話したことがあって、とてもイイやつ。

そして日本語マニュアルの情報は古いので要注意。

英語マニュアルのNoteには以下の記載あり。

For all offerings, if you are not licensed for Oracle Multitenant, then you may have up to 3 PDBs in a given container database at any time.

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